Why The Government Doesn't Use The Post Office

Federal agencies only spent 2% of their shipping budget with the USPS. Why isn't the Federal Government using the USPS more than other businesses?

http://www.wgrz.com/video/2255137677001/1/Why-The-Government-Doesnt-Use-The-Post-Officehttp://bc_gvpc.edgesuite.net/img/963482463001/201303/3420/963482463001_2255094502001_th-5151c585e4b07e409f542c2b-1592194021001.jpg?pubId=963482463001Why The Government Doesn't Use The Post OfficeFederal agencies only spent 2% of their shipping budget with the USPS. Why isn't the Federal Government using the USPS more than other businesses?post officeGovernmentuspsvpcNational NewsGovernment/PoliticsbusinessWFMY01:53